function Inser() {
	var Contant = document.form_3.texta.value;
	var term=document.form_3.terme.value;
	var lib=document.form_3.libelle.value;
	var model=document.form_3.model.value;
	var xhr = null;
	
	if (lib == ""||term==""||Contant==""||model=="")
		alert("ERREUR : Tout les champs sont obligatoire");
	else {
		if (window.XMLHttpRequest) {
			xhr = new XMLHttpRequest();
		} else if (window.ActiveXObject) {
			xhr = new ActiveXObject("Microsoft.XMLHTTP");
		}
		xhr.open("GET", "Create_query.jsp?Contant="+ Contant + "&term=" + term + "&lib=" + lib + "&model=" + model, false);
				xhr.send(null);
				
		
	
		document.getElementById("err").innerHTML = xhr.responseText;
	}

}